8989809623 has 2 divisors, whose sum is σ = 8989809624. Its totient is φ = 8989809622.

The previous prime is 8989809617. The next prime is 8989809643. The reversal of 8989809623 is 3269089898.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8989809623 is a prime.

It is a super-3 number, since 3×8989809623³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8989809643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4494904811 + 4494904812.

It is an arithmetic number, because the mean of its divisors is an integer number (4494904812).

Almost surely, 2^8989809623 is an apocalyptic number.

8989809623 is a deficient number, since it is larger than the sum of its proper divisors (1).

8989809623 is an equidigital number, since it uses as much as digits as its factorization.

8989809623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 62.

The square root of 8989809623 is about 94814.6065909678. The cubic root of 8989809623 is about 2079.2984584769.

The spelling of 8989809623 in words is "eight billion, nine hundred eighty-nine million, eight hundred nine thousand, six hundred twenty-three".